U.S. patent application number 13/012511 was filed with the patent office on 2012-01-05 for airbag module.
Invention is credited to Yeon Kyung KIM.
Application Number | 20120001405 13/012511 |
Document ID | / |
Family ID | 45399139 |
Filed Date | 2012-01-05 |
United States Patent
Application |
20120001405 |
Kind Code |
A1 |
KIM; Yeon Kyung |
January 5, 2012 |
AIRBAG MODULE
Abstract
Provided is an airbag module of which the weight is reduced, the
assembly process is simplified, and the design can be easily
changed. An airbag module according to an exemplary embodiment of
the present invention includes: an airbag cushion inflated and
developed by an inflow gas; an airbag housing having a cushion
inlet through which the airbag cushion is inserted, accommodating
the airbag cushion inserted through the cushion inlet, and made of
a flexible material; and a cushion cover combined with the airbag
housing to cover the cushion inlet and made of a flexible
material.
Inventors: |
KIM; Yeon Kyung; (Seoul,
KR) |
Family ID: |
45399139 |
Appl. No.: |
13/012511 |
Filed: |
January 24, 2011 |
Current U.S.
Class: |
280/728.2 |
Current CPC
Class: |
B60R 21/2176
20130101 |
Class at
Publication: |
280/728.2 |
International
Class: |
B60R 21/16 20060101
B60R021/16 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 2, 2010 |
KR |
10-2010-0063884 |
Claims
1. An airbag module comprising: an airbag cushion inflated and
developed by an inflow gas; an airbag housing having a cushion
inlet through which the airbag cushion is inserted, accommodating
the airbag cushion inserted through the cushion inlet, and made of
a flexible material; and a cushion cover combined with the airbag
housing to cover the cushion inlet and made of a flexible
material.
2. The airbag module according to claim 1, wherein the airbag
housing and/or the cushion cover are made of a material including
fabric.
3. The airbag module according to claim 1, wherein a tear portion
is formed by cutting a portion of the cushion cover to be torn by
inflation pressure of the airbag cushion, when the airbag cushion
inflates and develops.
4. The airbag module according to claim 1, further comprising a
reinforcing member attached around the airbag housing such that the
airbag housing withstands the inflation pressure of the airbag
cushion.
5. The airbag module according to claim 4, wherein the reinforcing
member includes: a horizontal reinforcing member horizontally
attached around the airbag housing; and a vertical reinforcing
member vertically attached around the airbag housing.
6. The airbag module according to claim 4, wherein the reinforcing
member is made of a flexible material.
7. The airbag module according to claim 6, wherein the reinforcing
member is made of a material including fabric.
8. The airbag module according to claim 1, further comprising: an
inflator supplying a gas into the airbag cushion; and an inflator
support combined with the airbag housing and supporting the
inflator.
9. The airbag module according to claim 8, wherein the inflator
support is made of a flexible material.
10. The airbag module according to claim 9, wherein the inflator
support is made of a material including fabric.
11. The airbag module according to claim 1, further comprising a
mounting member combined with the airbag housing to be mounted in a
vehicle and restraining movement of the airbag housing due to
development pressure of the airbag cushion.
12. The airbag module according to claim 11, further comprising an
inflator supplying a gas into the airbag cushion, wherein the
mounting member includes: a first mounting member attached to the
bottom of the airbag housing at one side from the inflator; and a
second mounting member attached to the bottom of the airbag housing
at the opposite side to the first mounting member from the
inflator.
13. The airbag module according to claim 11, wherein the mounting
member is made of a flexible material.
14. The airbag module according to claim 12, wherein the mounting
member is made of a material including fabric.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to Korean Patent
Application Number 10-2010-0063884 filed Jul. 2, 2010, the entire
contents of which application is incorporated herein for all
purposes by this reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to an airbag module, and more
particularly, to an airbag module in which an airbag housing having
a cushion inlet is made of a flexible material, an airbag cushion
is accommodated in the airbag housing through the cushion inlet,
and a cushion cover made of a flexible material is connected to the
airbag housing to cover the cushion inlet.
[0004] 2. Description of the Related Art
[0005] In general, a vehicle is equipped with airbag module to
prevent a passenger from being hurt due to direct hitting to a
structure of the vehicle in an accident.
[0006] The airbag module includes an inflator generating a gas, an
airbag cushion connected with the inflator and inflated and
developed by the inflow gas to protect the passenger, and an airbag
housing accommodating the airbag cushion and mounted in the
vehicle.
[0007] The airbag housing is made of steel or plastic to withstand
inflation pressure and development pressure of the airbag cushion
and mounted in the vehicle.
[0008] Further, the airbag cushion is folded in the airbag housing,
that is, the airbag cushion is folded several times and sealed in a
cushion package with a cushion cover in order not to develop, and
then the cushion package is accommodated in the airbag housing.
SUMMARY OF THE INVENTION
[0009] The present invention has been made in effort to provide an
airbag module in which an airbag housing having a cushion inlet is
made of a flexible material, an airbag cushion is accommodated in
the airbag housing through the cushion inlet, and a cushion cover
made of a flexible material is connected to the airbag housing to
cover the cushion inlet.
[0010] The objects of the present invention are not limited to the
object described above, and the other objects not stated in the
above will be clearly understood by those skilled in the art from
the following description.
[0011] An exemplary embodiment of the present invention provides an
airbag module includes: an airbag cushion inflated and developed by
an inflow gas; an airbag housing having a cushion inlet through
which the airbag cushion is inserted, accommodating the airbag
cushion inserted through the cushion inlet, and made of a flexible
material; and a cushion cover combined with the airbag housing to
cover the cushion inlet and made of a flexible material.
[0012] The details of other exemplary embodiments are included in
the detailed description and the drawings.
[0013] According to the exemplary embodiment of the present
invention, the airbag module has an effect in reducing the weight
while allowing easy change in design, because the airbag housing is
made of a flexible material.
[0014] Further, it has an effect in easily maintaining the parts
and simplifying the assembly process, because the airbag housing
and the cushion cover are integrated.
[0015] The effects of the present invention are not limited to the
effects described above, and the other effects not stated in the
above will be clearly understood by those skilled in the art from
the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] FIG. 1 is a perspective view of an airbag module according
to an exemplary embodiment of the present invention;
[0017] FIG. 2 is a cross-sectional view taken along the line A-A of
FIG. 1;
[0018] FIG. 3 is a view showing an airbag housing and a cushion
cover of the airbag module according to an exemplary embodiment of
the present invention, before an airbag cushion is
accommodated;
[0019] FIG. 4 is a view showing an airbag housing and a cushion
cover of the airbag module according to an exemplary embodiment of
the present invention, after the airbag cushion is accommodated;
and
[0020] FIG. 5 is a bottom view of the airbag housing of the airbag
module according to an exemplary embodiment of the present
invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Advantages and features of the present invention and methods
for achieving them will be made clear from exemplary embodiments
described below in detail with reference to the accompanying
drawings. However, the present invention is not limited to
exemplary embodiments described herein and will be implemented in
various forms. The exemplary embodiments are provided by way of
example only so that a person of ordinary skill in the art can
fully understand the disclosures of the present invention and the
scope of the present invention. Therefore, the present invention
will be defined only by the scope of the appended claims. Like
reference numerals designate like components throughout the
specification
[0022] An airbag module according to an exemplary embodiment of the
present invention is described hereafter with reference to the
accompanying drawings. The airbag module shown in the figures is a
passenger airbag module as an example, and integrally forming a
cushion 30 with an airbag housing 20 made of a flexible material is
the subject of the present invention and may be applied to other
airbag modules, including a driver airbag module, a knee airbag
module, a side airbag module, and a curtain airbag module, which
will be clearly understood by those skilled in the art from the
following description.
[0023] FIG. 1 is a perspective view of an airbag module according
to an exemplary embodiment of the present invention, FIG. 2 is a
cross-sectional view taken along the line A-A of FIG. 1, FIG. 3 is
a view showing an airbag housing and a cushion cover of the airbag
module according to an exemplary embodiment of the present
invention, before an airbag cushion is accommodated, FIG. 4 is a
view showing an airbag housing and a cushion cover of the airbag
module according to an exemplary embodiment of the present
invention, after the airbag cushion is accommodated, and FIG. 5 is
a bottom view of the airbag housing of the airbag module according
to an exemplary embodiment of the present invention.
[0024] Referring to FIGS. 1 to 5, an airbag module according to an
exemplary embodiment of the present invention includes an airbag
cushion 10 inflated and developed by an inflow gas, an airbag
housing 20 accommodating the airbag cushion 10, and a cushion cover
30 disposed on the airbag housing 20.
[0025] The airbag cushion 10 is connected with an inflator 40,
which is a gas generator, folded several times and accommodated in
the airbag housing 20, and inflated and developed through the
cushion cover 30 by an inflow of gas generated from the inflator
40, thereby preventing a passenger from hitting the structure of a
vehicle and being hurt.
[0026] The airbag housing 20 is mounted in a vehicle, with the
airbag cushion 10 accommodated therein, and made of a flexible
material, for easy weight reduction and design change. The airbag
housing 20 is manufactured by coating fabric with silicon to
withstand the temperature of the gas in the exemplary
embodiment.
[0027] The airbag housing 20 made of a flexible material is sewn in
a hollow rectangular box shape with a cushion inlet 22 to form the
cushion inlet 22 for inserting the airbag cushion 10 at the upper
portion, as shown in FIG. 3.
[0028] The airbag cushion 10 is folded several times and
accommodated in the airbag housing 20 through the cushion inlet 22
at the upper portion of the airbag housing 20.
[0029] The inflator 40 supplying a gas into the airbag cushion 10
is mounted at the lower portion of the airbag housing 20.
[0030] However, since the airbag housing 20 is made of a flexible
material, it may fail to support the inflator 40. Therefore, an
inflator support 50 is attached to the bottom of the airbag housing
20 to ensure enough strength to support the inflator 40.
[0031] The inflator support 50 is made of a flexible material and
sewn to the airbag housing 20. The inflator support 50 is formed by
coating strong webbing with silicon to withstand the temperature of
the inflator 40 in the exemplary embodiment.
[0032] An inflator hole 45 is formed in the inflator support 50 and
the airbag housing 20 to insert the inflator 40. Further, bolt
holes 42 are formed around the inflator hole 45 in the inflator
support 50 and the airbag housing 20.
[0033] The inflator 40 is inserted in the inflator hole 45 from
under the airbag housing 20, such that the inserted portion is
connected with the airbag cushion 10 to supply a gas into the
airbag cushion 10 and the other portion, which is not inserted, is
fixed with the airbag cushion 10, the airbag housing 20, and the
inflator support 50 by tightening the bolts 44 into the bolt holes
42.
[0034] Further, since the airbag housing 20 is made of a flexible
material, it may be moved up and down by the development pressure
of the airbag cushion 10, when the airbag cushion 10 inflates and
develops. That is, the airbag cushion 10 is connected with the
inflator 40 at the lower portion in the airbag housing 20 and
develops upward from the airbag housing 20, when the gas is
supplied therein from the inflator 40, in which the airbag housing
20 made of a flexible material may be moved up and down by the
development pressure of the airbag cushion 10.
[0035] Therefore, a mounting member 60 is combined with the airbag
housing 20 to mount and fix the airbag housing 20 in the vehicle.
Since the airbag cushion 10 is connected with the inflator 40 at
the lower portion in the airbag housing 20, it is preferable to
attache the mounting member 60 to the bottom of the airbag housing
20 to prevent the airbag housing 20 from moving up and down.
[0036] The mounting member 60 is made of a flexible material and
sewn to the bottom of the airbag housing 20. The mounting member 60
is formed by coating fabric with silicon in the exemplary
embodiment.
[0037] The mounting member 60 includes a first mounting member 62
attached to the bottom of the airbag housing 20 at one side from
the inflator 40 and a second mounting member 64 attached to the
bottom of the airbag housing 20 at the opposite side to the first
mounting member 62 from the inflator 40. As described above, the
mounting member 60 is attached to the bottom of the airbag housing
20 at both sides from the inflator 40; therefore, it is possible to
prevent the airbag housing 20 made of a flexible material from
sagging due to the weight of the inflator 40.
[0038] A hole 62a is formed at the first mounting member 62 and a
hole 64a is formed at the second mounting member 64, in order to
fasten the mounting members to the vehicle. The holes 62a, 64a each
may be one or more. The first mounting member 62 and the second
mounting member 64 can be mounted to the vehicle by inserting
fasteners in the holes 62a, 64a.
[0039] Further, since the airbag housing 20 is made of a flexible
material, it may be damaged while inflating together with the
airbag cushion 10, due to the inflation force of the airbag 10,
when the airbag cushion 10 inflates and develops. Accordingly, a
reinforcing member 70 is attached around the airbag housing 20 such
that the airbag housing 20 can withstand the inflation force of the
airbag cushion 10.
[0040] The reinforcing member 70 is made of a flexible material and
sewn to the airbag housing 20. The reinforcing member 70 is formed
by coating strong webbing with PET (Polyethylene terephthalate) or
silicon in the exemplary embodiment.
[0041] The reinforcing member 70 includes a horizontal reinforcing
member 72 horizontally attached around the airbag housing 20 and a
vertical reinforcing member 74 vertically attached around the
airbag housing 20. One horizontal reinforcing member 72 is attached
around the airbag housing 20 and three vertical reinforcing members
74 are attached around the airbag housing 20 to cross the
horizontal reinforcing member 72 in the exemplary embodiment. As
described above, the reinforcing member 70 is composed of the
horizontal reinforcing member 72 and the vertical reinforcing
members 74 such that the sides of the airbag housing 20 are
horizontally and vertically reinforced; therefore, the airbag
housing 20 can further withstand the inflation pressure of the
airbag cushion 10 and the vertical reinforcing members 74 can
prevent the airbag housing 20 from being moved up and down by the
development pressure of the airbag cushion 10.
[0042] The cushion cover 30 is combined to cover the cushion inlet
22 at the upper portion of the airbag housing 20. The cushion cover
30, as shown in FIG. 3, has one end integrally connected with the
airbag housing, before the airbag cushion 10 is accommodated in the
airbag housing 20. In this status, the airbag cushion 10 is folded
several times and inserted into the airbag housing 20 through the
cushion inlet 22; thereafter, the other end that is not connected
to the airbag housing 20 is connected to the airbag housing 20 to
cover the cushion inlet 22, as shown in FIG. 4. Therefore, it is
possible to prevent the airbag cushion 10 folded in the airbag
housing 20 from inflating before the inflator 40 operates, and also
prevent the airbag cushion 10 from coming out of the airbag housing
20.
[0043] The cushion cover 30 is made of a flexible material and sewn
to the airbag housing 20. The cushion cover 30 is formed by coating
fabric with silicon in the exemplary embodiment.
[0044] A tear portion 35 is formed by cutting a portion of the
cushion cover 30. The tear portion 35, which is a portion through
which the airbag cushion 10 inflating comes out, is formed by
partially cutting the cushion cover 30 such that the cushion cover
30 is easily torn at the tear portion by the inflation pressure of
the airbag cushion 10.
[0045] An assembly process of the airbag module having the above
configuration according to an exemplary embodiment of the present
invention is described below.
[0046] First, the airbag housing 20 is fabricated by sewing a raw
material such that the cushion inlet 22 and the inflator hole 25
are formed at the upper portion and the lower portion,
respectively. The airbag housing 20 may be fabricated by folding a
raw material in several layers.
[0047] Thereafter, the inflator support 50, the mounting member 60,
the reinforcing member 70, and the cushion cover 30 are sewn to the
airbag housing 20. In this configuration, the order of sewing the
inflator support 50, the mounting member 60, the reinforcing member
70, and the cushion cover 30 to the airbag housing 20 is not
limited. Hereafter, it is exemplified that the inflator support 50,
the mounting member 60, the reinforcing member 70, and the cushion
cover 30 are sewn to the airbag housing 20, in the order of the
description.
[0048] The inflator hole 55 is formed in the inflator support 50,
and then the inflator support 50 is combined with the airbag
housing 20 such that the inflator hole 55 is aligned with the
inflator hole 25 of the airbag housing 20.
[0049] Thereafter, the mounting member 60 is combined with the
airbag housing 20 at both sides from the inflator hole 45.
[0050] Thereafter, the reinforcing member 70 is attached around the
airbag housing 20.
[0051] Thereafter, the tear portion 35 is formed in the cushion
cover 30 and then one end of the cushion cover 30 is connected to
the airbag housing 20, with the other end remaining
unconnected.
[0052] As described above, a housing assembly is completed by
combining the inflator support 50, the mounting member 60, the
reinforcing member 70, and the cushion cover 30 with the airbag
housing 20.
[0053] Thereafter, the airbag module is completed by accommodating
the airbag cushion 10 into the housing assembly, combining the
inflator 40, and combining the cushion cover 30 with the airbag
housing 20 to cover the cushion inlet 22, and this process is as
follows.
[0054] First, one end of the airbag cushion 10 that is unfolded is
inserted into the cushion inlet 22 and connected with the inflator
40 through the inflator hole 45.
[0055] Thereafter, the inflator 40 connected with one end of the
airbag cushion 10 is partially inserted into the inflator hole 45
and then combined with the airbag cushion 10, the airbag housing
20, and the inflator support 50 by inserting tightening the bolts
44 into the bolt holes 42.
[0056] Thereafter, the airbag cushion 10 is inserted into the
airbag housing 20 through the cushion inlet 22 while being folded
several times.
[0057] Thereafter, the other end of the cushion cover 30 which is
not connected to the airbag housing 20 is passed over the airbag
housing 20 such that the cushion cover 30 covers the cushion inlet
22, and then connected to the airbag housing 10, thereby completing
the airbag module.
[0058] The airbag module completed as described above is mounted in
the instrument panel positioned in front of the passenger seat in a
vehicle, in which the mounting member 60 is combined with the cowl
cross member disposed in the instrument panel.
[0059] A development process of the airbag module having the above
configuration according to an exemplary embodiment of the present
invention is described below.
[0060] First, when a car accident occurs, a gas is generated from
the inflator 40 and flows into the airbag cushion 10.
[0061] Next, the airbag cushion 10 is inflated and developed by the
gas flowing therein from the inflator 40. In the process, the tear
portion 35 of the cushion cover 30 is torn by the inflation
pressure of the airbag cushion 10 and the airbag cushion 10 comes
out through the tear portion 35 and develops to protect a
passenger.
[0062] As described above, since all of the airbag housing 20,
inflator support 50, mounting member 60, reinforcing member 70, and
cushion member 30 is made of a flexible material, it is possible to
reduce weight and easily change design of the airbag module
according to an exemplary embodiment of the present invention.
[0063] Further, since the airbag housing 20 and the cushion cover
30 are integrated, it is possible to easily maintain the parts and
also simplify the assembly process.
[0064] While certain embodiments have been described above, it will
be understood to those skilled in the art that the exemplary
embodiments described are by way of example only. Accordingly, the
apparatus described herein should not be limited based on the
described embodiments. The scope of the present invention is
defined in the following claims and all changed or modified types
derived from the meanings and scope of the claims and the
equivalent concept thereof should be construed as being included in
the scope of the present invention.
* * * * *